Recommended Soil pH
for Growing Garden Fruits and Vegetables
- Different types of vegetable plants require varying degrees of soil acidity.
-
Basically soil pH is a measure of the amount of lime (calcium) contained in your soil, and the type of soil that
you have.
- Generally, soils in moist climates tend to be acid and those in dry climates are alkaline.
- A soil with a pH lower than 7.0 is an acid soil and one with a pH higher than 7.0 is alkaline. The soil must be adjusted to suit the plant
which will occupy that area if it is not already within that plants requirement range.
Vegetable |
Optimal pH |
Okra |
6.0-8.0 |
Onions |
6.2-6.8 |
Parsley |
6.0-8.0 |
Parsnip |
5.0-7.0 |
Peas |
5.6-6.6 |
Peanuts |
5.0-6.0 |
Peppers |
6.0-8.0 |
Potato |
5.8-6.5 |
Pumpkins |
5.0-7.0 |
Radish |
6.0-7.0 |
Raspberry |
6.0-6.5 |
Rhubarb |
5.0-7.0 |
Rutabaga |
5.0-7.0 |
Shallots |
5.0-7.0 |
Spinach |
5.0-7.0 |
Squash |
6.0-7.0 |
Strawberries |
6.0-7.0 |
Sunflowers |
6.0-7.0 |
Sweet corn |
6.0-7.0 |
Sweet potatoes |
5.0-7.0 |
Swiss chard |
6.0-7.0 |
Tobacco |
5.0-7.0 |
Tomatoes |
5.5-7.0 |
Turnip |
5.0-7.0 |
Yam |
6.0-8.0 |
Zucchini |
6.0-7.0 |
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